Filter element having wavy appearance



FIG. 1 is perspective view of a filter element having wavy appearance, constructed according to our new design, the portions shown in broken lines forming no part of the design sought to be patented;

FIG. 2 is a front view thereof, the portions shown in broken lines forming no part of the design sought to be patented;

FIG. 3 is a rear view thereof, the portions shown in broken lines forming no part of the design sought to be patented;

FIG. 4 is a top view thereof, the portions shown in broken lines forming no part of the design sought to be patented;

FIG. 5 is a bottom view thereof, the portions shown in broken lines forming no part of the design sought to be patented;

FIG. 6 is a left side view thereof, the portions shown in broken lines forming no part of the design sought to be patented; and,

FIG. 7 is a right side view thereof, the portions shown in broken lines forming no part of the design sought to be patented. 

The ornamental design for filter element having wavy appearance, as shown and described. 